Hundreds of pulsating lights cascaded down the River Derwent as part of a spectacular art project.
The ongoing Derwent Pulse project has been passing along the river, with communities along the route helping to take part in the initiative.
The project has been devised by artist Charles Monkhouse on behalf of the Derwent Valley Mills World Heritage Site.
Between October 11 and November 5, the lights are travelling down the river from Bleaklow, where the Derwent rises, to the Trent Mouth, on the other side of Derby.
Mr Monkhouse said: “Over a lunar month the lights will travel from source to mouth, each day forming a distinct passage as they respond to the landscape and its people.”
The display will visit Chatsworth today between 7pm and 8pm - where it can be viewed free of charge by members of the public from the Three Arched Bridge at Chatsworth House.
Earlier this week, 60 children from Grindleford Primary School, wearing illuminated LED costumes, escorted the lights between Hathersage and Grindleford in a spectacular electric parade.
Together with teachers and parents, the 120-strong group launched hundreds of glowing spheres at a location upstream, while many more people waited at the village sports ground to greet the lights as they floated down the river.
Mr Monkhouse said: “The enthusiastic contribution of Grindleford School in this latest stage has been tremendous and the children’s light parade was unforgettable.”
The project is a precursor to next year’s Made in Derbyshire campaign, a celebration of culture and heritage across the county.